Chester Liu f91b53d5fd Preprocess and convert C1 controls to their 7 bit equivalent (#7340) ... C1 control characters are now first converted to their 7 bit equivalent. This allows us to unify the logic of C1 and C0 escape handling. This also adds support for SOS/PM/APC string. * Unify the logic for C1 and C0 escape handling by converting C1 to C0 beforehand. This adds support for various C1 characters, including IND(8/4), NEL(8/5), HTS(8/8), RI(8/13), SS2(8/14), SS3(8/15), OSC(9/13), etc. * Add support for SOS/PM/APC escape sequences. Fixes #7032 * Use "Variable Length String" logic to unify the string termination handling of OSC, DCS and SOS/PM/APC. This fixes an issue where OSC action is successfully dispatched even when terminated with non-ST character. Introduced by #6328, the DCS PassThrough is spared from this issue. This PR puts them together and add test cases for them. References: https://vt100.net/docs/vt510-rm/chapter4.html https://vt100.net/emu/dec_ansi_parser Closes #7032 Closes #7317		2020-09-16 22:30:46 +00:00
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spell-check	Preprocess and convert C1 controls to their 7 bit equivalent (#7340)	2020-09-16 22:30:46 +00:00